The registration page plugin is working, but the sidebar signup widget doesn't work.
The widget asks for the first and last names and email address.
There isn't a check box to select what kind of list you want to signup for.
However, when the signup button is pressed, the widget asks for a list to be selected.
In the plugin I have selected a default list to be added to the registration and that works during the registration process.
But I cannot find any way to edit or setup the sidebar widget.